Screen



Patented Aug. 19, i924.l

UNITED STATES WILEYlvT. MANGUM, OF PURDY, VIRGINIA.

y SCREEN.

` Application led March i7, 1922. Serial No. 544,656.

T 0 all whom t may @0n-cern:

Be it known that I, IVILEY M., MANGUM, a citizen of the United States, and a resident of Purdy, in the county of Greensville and State of Virginia., have invented new and useful Improvements in Screens, of which the following is a specification.

This invention relates more especially to screens for windows, doors and the like, which are used to protect the same, when open, against ffies, mosquitoes and the like, although my improvements may be utilized in a screen for any place whatever to permit circulation and protect against insects of any kind. v

The objects of the invention are to secure an improved construction by which flies and thelike are permitted to pass through the screen out of the room or apartment to be protected and are prevented from passing in; to secure such va screen which appears when looked through from either side to be of a single thickness of screening; to provide such a screenwith peripherally projecting marginal portions of screening which have their outer edges even or both terminating at the end of thepassage between them; to space said outer edges, and the outlet `of the passage, from the frame so as to ensure that the ily or other insect has only one edge of screen to sta-nd upon in attempting to enter through the passage; to thus render such entrance impossible; to provide for this purpose a screen frame having' a peripherally continuous surface upon which the screening forming one wall of the passage can be secured and thus enable the screening to be applied in one large piece and four strips corresponding to the four edges of the screen; to thus simplify, expedite and cheapen the manufacture of the screens and to increase their efficiency by providing acontinuous exit slot for the entire periphery of the screen, and to obtain other results and advantages as may be brought out bythe following description.

Referring to the accompanying drawings, in which the same reference characters designate corresponding and like parts,

Figure l is an outside view of one forni of a screen of my improved construction, and

Figure 2 is a section of the same on line 2-2 of Fig. l, looking in the'direction indicated by the arrow. In the specific embodiment of the inven tion shown in said drawings, l and 2 indicate the side pieces of the screen frame, and 3 and l the top and `bottom pieces, said pieces being made of any suitable and well known material` and secured together in any suit-able and well known manner for appliv cation to a window or similar opening as is common in the art. In the particular screen shown, a strip 5 is providedl at one side edge of the screen, hinged to the side piece 2 by hinges 6, 6 and thus adapted to partially fold for insertion of the screen beneath a window sash, the strip 5A being held extended as shown in the drawing by a button 7. yThis, however, is not essential t0 the present invention, and the screen may be applied to a window or other opening 1n any manner.

AI have shown in said drawing a raised rib i 8 at the outside of the screen frameand adjacent to the opening through the same, this rib providing an inner screen supporting surface upon which are tacked strips 9 of screening, onefor each edge of the screen; these strips are preferably flush with the rib 8 at its side next the frame opening, and project beyond the rib at its opposite side a suitable distance to necessitate a fly crawling up' the strips away from the rib 8 to reach said projecting edge ofthe strips, as shown in Figure 2 at reference numeral 13.

Upon the said strips 9 are placed at suitable intervals blocks l() which arey wedge shaped transversely of the rib 8 with their thicker ends next the frame opening, sai-d blocks being secured in place by nailing to the rib 8 and providing outer screen supporting surfaces. The main screening Il of 'the screen is then laid on the said blocks l() and secured thereto by tacking, said screening l1 being of such size and dimensions that its marginal portion 12 extends beyond the blocks 10 a distance equal yto cor the projection of the strips 9 at 13. Furthermore, by reason of the said tapered blocks 10 said marginal portion of the main screening 1l converges away from the frame opening toward the strips 9 to form a tapered passage between, the edges of which ypassage walls away from the frame opening are Vsubstantially even as shown in the drawings, that is to say, both walls terminate in a plane substantially perpendicular to the plane of the screen, so that a Hy or the like must stand upon said edges or one of them to enter between them.

Preferably the inner and outer screen suppor-ting surfaces, and therefore also the rib 8 'and blocks 10, have their corresponding lateral edges inthe case of the surfaces and their corresponding sides 'in the case of the rib and'blocks, in thesame plane perpendicular to the plane of the screen frame. That is to say, the side of the rib 8 and ends of the blocks 10 next the frame opening are in the same perpendicular plane, at a given point, and the same is true at the opposite side of the rib S, as clearly shown inFigure 2. The effect of this is that when theiscreen is viewed as in Figure 1, said lateral sides' or lateral edges of the screen supporting surfaces toward the frame opening coincide, and same is true of the opposite lateral edges away from the screen opening; therefore practically nothing but the outer screening is seen and the visional effect is not much different from an ordinary screen.

. When the screen is placed in a window, it will be understood that only a single thickness of screening is looked through in either direction, and from the inside of the room there is hardly anything to be seen except the single thickness of screening. Any flies gathering on the inside of the screen will tend to crawl ytoward the edge of the screen land passing between the blocks 8 will escape throughthe tapering passage between the marginal j portions of` screening. On the other hand, any flies on the outside of the screen, ifthey walk to the extreme edge of the main screening 11, will have to turn sharply over said edge to enter the small end of the tapered passage, which they are not at all likely to do, in fact, it has been found that none will enter in this way.

It will lbe seen that by my invention I provide a tapered passage between two out` wardly projecting marginal portions of screening which not only terminate evenly at their ends but also are spaced from other parts of the screen, so that a fly to enter must crawl up the outside of one of the walls of the passage and turn sharply over its edge into the small end of the passage. This may be secured in many other ways than the one specifically shown for purposes of illustration, and tl'ierefore I do not wish to be understood as limiting myself except as required by the following claims when construed in the light of the prior art.

Having thus described the invention, what I claim is:

l. In a screen, the con'ibination of a fran'ie, a piece of screening over the opening of said frame and spaced from the frame with its marginal portion projecting peripherally beyond said opening, and a strip of screening between said frame and piece of screening adjacent the opening of the frame in such spaced relation to the main screening as to permit a fly to pass therebetween from the opening of the frame, the edge of said strip next the opening of the frame forming a closure therewith and the edge away from the frame opening being free and spaced from the frame and terminating substantially Hush with the edge of the marginal portion of the main screening, whereby a fly or the like must stand on the said edges to enter between them.

2. In a screen, the combination of a frame, means at the outer side of said frame and adjacent its opening providing screen-supporting surfaces in s aced planes which converge outwardly an peripheral outlets between said planes, and inner and outer screening secured to said surfaces with inarginal portions projecting therebeyond away from the frame opening in s aced relation to the frame to form an exit or flies or the like, the outer screening closing the opening of the frame and the inner screening leaving it open both centrally and peripherally to said outlets.

3. In a screen, the combination with a frame having at its outer side and adjacent its opening a screening surface, blocks rojecting from said surface and rovi ing other screening surfaces transverse y similar to the first-mentioned surfaces, said screening surfaces converging outwardly, and screening secured on said surfaces and )rojecting outwardly therefrom with tlieir edges free from the frame and forming a tapering exit passage from the frame opening, the outer screening closing the frame opening and the inner screening leaving it open.

4. In a screen, the combination with a frame having at its outer side and adjacent its opening an inner screen-supporting snrface, blocks projecting from said surface and providing an outer screen-supporting surface spaced from the Erst-mentioned surface and coextensive therewith transversely of the frame in its plane, and inner and outer screening spaced from each other secured to said surfaces and projecting beyond the same away from the openlng and terminating in edges free from the frame, the outer screening closing the frame opening and the inner screening leaving it open and forming with the outer screening an exit passage from said opening.

5. In a screen,` the combination of a iraine providing at its outer side and adjacent its opening spaced screen-supporting surfaces which have their corresponding* lateral edges lying in the same plane perpendicular to the plane of the frame, and inner and outer screening spaced from each other secured to said Surfaces with marginal portions projecting therebeyond in spaced relation to the i'ranie and terminating substantially even With each other and With the passage between them, the outer screening closing the frame opening and the inner screening leaving it open.

VILEY M. MANGUM. 

